1 /* 2 * Copyright (c) 1995-1998 John Birrell <jb@cimlogic.com.au> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. Neither the name of the author nor the names of any co-contributors 14 * may be used to endorse or promote products derived from this software 15 * without specific prior written permission. 16 * 17 * THIS SOFTWARE IS PROVIDED BY JOHN BIRRELL AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 * 29 * $FreeBSD: src/lib/libthr/thread/thr_info.c,v 1.10 2007/04/05 07:20:31 davidxu Exp $ 30 */ 31 32 #include "namespace.h" 33 #include <sys/lwp.h> 34 #include <stdlib.h> 35 #include <string.h> 36 #include <unistd.h> 37 #include <pthread.h> 38 #include <pthread_np.h> 39 #include "un-namespace.h" 40 41 #include "thr_private.h" 42 43 /* Set the thread name for debug. */ 44 void 45 _pthread_set_name_np(pthread_t thread, const char *name) 46 { 47 pthread_t curthread = tls_get_curthread(); 48 49 if (curthread == thread) { 50 lwp_setname(thread->tid, name); 51 } else { 52 if (_thr_ref_add(curthread, thread, 0) == 0) { 53 THR_THREAD_LOCK(curthread, thread); 54 if (thread->state != PS_DEAD) 55 lwp_setname(thread->tid, name); 56 THR_THREAD_UNLOCK(curthread, thread); 57 _thr_ref_delete(curthread, thread); 58 } 59 } 60 } 61 62 /* Set the thread name for debug. */ 63 void 64 _pthread_get_name_np(pthread_t thread, char *name, size_t len) 65 { 66 pthread_t curthread = tls_get_curthread(); 67 68 if (curthread == thread) { 69 lwp_getname(thread->tid, name, len); 70 } else { 71 if (_thr_ref_add(curthread, thread, 0) == 0) { 72 THR_THREAD_LOCK(curthread, thread); 73 if (thread->state != PS_DEAD) 74 lwp_getname(thread->tid, name, len); 75 else if (len) 76 name[0] = 0; 77 THR_THREAD_UNLOCK(curthread, thread); 78 _thr_ref_delete(curthread, thread); 79 } else if (len) { 80 errno = EINVAL; 81 name[0] = 0; 82 } 83 } 84 } 85 86 __strong_reference(_pthread_get_name_np, pthread_get_name_np); 87 __strong_reference(_pthread_set_name_np, pthread_set_name_np); 88